72220553889 has 32 divisors (see below), whose sum is σ = 106317619200. Its totient is φ = 43242936000.

The previous prime is 72220553887. The next prime is 72220553891. The reversal of 72220553889 is 98835502227.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72220553887) and next prime (72220553891).

It is not a de Polignac number, because 72220553889 - 2¹ = 72220553887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72220553887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1533312 + ... + 1579710.

It is an arithmetic number, because the mean of its divisors is an integer number (3322425600).

Almost surely, 2^72220553889 is an apocalyptic number.

It is an amenable number.

72220553889 is a deficient number, since it is larger than the sum of its proper divisors (34097065311).

72220553889 is a wasteful number, since it uses less digits than its factorization.

72220553889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46981.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 72220553889 in words is "seventy-two billion, two hundred twenty million, five hundred fifty-three thousand, eight hundred eighty-nine".